Gastric phase

Stimulus; presence of food and undigested proteins, duration;long,purpose; secretions used to break down food(proteins), mix, acidify, control; CNS and ENS; secretions; gastrins stimulates parietal and cheif cells, parietal cells secrete HCI and intrinsic factor, chief cells secrete pepsionogen, hisamin stimulates parietal cells secretion of HCI